title: Photorefractive effects in ZnO nanorod doped liquid crystal cell.
abstract: In a forced light scattering experiment, after the diffraction efficiency arrives to a stable state, both direct current (DC) voltage and two writing beams are turned off, and then by reapplication of the DC voltage we observed a peak. We provide an explanation based on periodically changed anchoring energy and also discuss the evolution of diffraction efficiency under different grating constants, laser polarization, and the direction of the optical axis of a liquid crystal cell. Experiment results show that photo-introduced charge density is nearly in proportion to the intensity of writing beams.
authors.affiliation: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China.
authors.forename: Yubing
authors.initials: Y
authors.lastname: Guo
authors.forename: Yonghai
authors.initials: Y
authors.lastname: Chen
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiang
authors.forename: Shengchun
authors.initials: S
authors.lastname: Qu
authors.forename: Zhanguo
authors.initials: Z
authors.lastname: Wang